This is already the third K-5 of my (the first two replaced because of "sensor spot issue")...And guess what? I just found a little set of sensor spots on my K-5's sensor...aaargh. Yes, those problematic ones, not normal dust spots.
This my latest K-5's serial# is 400XXXX and manufacture date 2011-02-26.

Should I take this in as a lucky coincidence? I mean, I always get a new replacement to replace faulty one...It's now 7 months later, already total 9000 shots taken (when I bought my first copy of K-5) and my camera is soon as brand new again ;-D Yippii.

...But seriously - how hard it is to do a one fully decent K-5 for me? After all - I am a bit (or maybe more) disappointed.